Cronulla remains prepared for punishments to be handed down this week despite the NRL's insistence its investigation into the club's 2011 supplement program was not yet completed.

The ARL Commissioners were briefed on the progress of the Integrity Unit's investigation during a 10-hour meeting on Wednesday, but ultimately the fate of the Sharks rests in the hands of NRL chief executive David Smith and chief operating officer Jim Doyle.

Cronulla has been advised by the NRL no determination has been made, however it is understood the club is expecting an announcement could be made on Friday.

Under-fire coach Shane Flanagan is trying to get on with business, even though speculation is mounting he could be hit with a lengthy ban, similar to the 12-month suspension the AFL gave Essendon coach James Hird.

The Sharks trained in Cronulla on Wednesday, while across town the club's future was being discussed at Rugby League Central.

Cronulla says it expects to be fully briefed by the NRL before an announcement is made public, with reports suggesting the club faces a significant fine for breaching the game's code of conduct back in 2011.

Coaching and training staff are being probed for the duty of care shown to players, but any sanctions handed down by the NRL are separate to ASADA's ongoing investigation - meaning it is highly unlikely infraction notices would be issued at this point.

"It's important to reiterate that the investigation is ongoing," the NRL said in a statement.

"At its regular meeting today the Commission was briefed on the progress of the investigation and the fact that matters are still being assessed."

The NRL ruled out any announcement on Thursday when Smith will speak at a press conference for the Auckland Nines.

At league headquarters on Wednesday, commissioners arrived before 8am and the meeting did not conclude until over 10 hours later.

Cronulla said it has been fully cooperative with the Integrity Unit throughout six months of investigations.

"The NRL rules set out a process for these investigations and the club have assisted as much as possible throughout the process," said Sharks chief executive Steve Noyce.

"We have been advised by the NRL that at this stage no determination has been made."

ARL commissioner John Grant said on Wednesday that a line in the sand would be drawn and a resolution was coming.

"We've got to clean it up and move on and the players and everyone wants to do that and that's what we'll do," Grant told the Seven Network.